Add Watermark to PDF

Related operations

For tagging each page with a numeric label, try PDF page numbers. To bundle watermarked files into one PDF, use merge PDF. For shrinking the marked output, see compress PDF.

Frequently asked questions

How do I add a watermark to a PDF?

Drop your PDF into the tool, type your watermark text (e.g. CONFIDENTIAL or DRAFT), adjust the opacity and size sliders, choose a colour, then click 'Add watermark' and download.

Can I customise the watermark text?

Yes. Type your own text, such as CONFIDENTIAL, DRAFT, SAMPLE, or your company name. The watermark font, Helvetica Bold, covers Latin letters, digits and common punctuation (the Windows-1252 set, including é, ñ, ü and €). Other scripts, emoji and symbols such as ✓ are not supported: the tool names any such character so you can remove or replace it.

Will the watermark appear on every page?

Yes. The watermark is stamped diagonally across every page of the PDF.

Can the watermark be removed after adding it?

The watermark is added to each page as its own block of page content. That deters casual reuse, but anyone with PDF editing software or a PDF library can find and remove it, so do not rely on it for security or tracking.

Does the watermarked PDF keep its title and author?

Yes. The document properties, such as title, author, and dates, are kept as they were, and the download is saved as a new file with -watermarked added to its name. All processing runs in your browser using pdf-lib.